Boleite and Petalite Physical Properties

Boleite

Petalite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

insoluble

1.3 Durability

Not Available

1.4 Specific Gravity

5.052.40

1 7.18

1.5 Fracture

Uneven, UnevenArthur Thomas, Gemstones (2009)

Subconchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Conchoidal

1.6 Cleavage

[001] perfect

Perfect on {001}, poor on {201} with 38.5° angle between the two

1.7 Mohs Hardness

3-3.56-6.5

2 10

1.8 Chemical Composition

Pb 26Ag 10Cu 24Cl 62(OH) 48 · 3H 2OWalter Schumann , Gemstones of the world (2001) More from other references

LiAlSi 4O 10Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Boleite and Petalite Chemical Formula

While comparing Boleite and Petalite physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Boleite and Petalite chemical formula.

Chemical formula of Boleite- Pb 26Ag 10Cu 24Cl 62(OH) 48 · 3H 2OWalter Schumann , Gemstones of the world (2001) More from other references
Chemical formula of Petalite- LiAlSi 4O 10Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Boleite and Petalite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Boleite and Petalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Boleite and Petalite Optical Properties during the identification of gemstone. Specific gravity of Boleite is 2.40 whereas that of Petalite is 2.40.